Step-by-step explanation: Decimal to Binary ConversionFormula: Divide the number by 2 repeatedly, get the remainders, and read them from bottom to top.---1) Decimal: 286286 ÷ 2 = 143 → remainder 0143 ÷ 2 = 71 → remainder 171 ÷ 2 = 35 → remainder 135 ÷ 2 = 17 → remainder 117 ÷ 2 = 8 → remainder 18 ÷ 2 = 4 → remainder 04 ÷ 2 = 2 → remainder 02 ÷ 2 = 1 → remainder 01 ÷ 2 = 0 → remainder 1Answer: 286 (decimal) = 100011110 (binary)---2) Decimal: 170170 ÷ 2 = 85 → remainder 085 ÷ 2 = 42 → remainder 142 ÷ 2 = 21 → remainder 021 ÷ 2 = 10 → remainder 110 ÷ 2 = 5 → remainder 05 ÷ 2 = 2 → remainder 12 ÷ 2 = 1 → remainder 01 ÷ 2 = 0 → remainder 1Answer: 170 (decimal) = 10101010 (binary)---3) Binary: 111000111Since binary na siya, i-verify lang naton if correct: Yes, 111000111 is already in binary.But if you're asking for conversion from binary to decimal, here’s how:Binary: 111000111→ = 256 + 128 + 64 + 0 + 0 + 0 + 4 + 2 + 1 = 455Answer: 111000111 (binary) = 455 (decimal)--- Octal to Binary ConversionRule: Convert each octal digit to a 3-digit binary number.---1) Octal: 75637 = 1115 = 1016 = 1103 = 011Answer: 7563 (octal) = 111101110011 (binary)---2) 10000011001This is not an octal number (it has digits 8 and 9), which are invalid in octal. Octal digits must only be 0 to 7.Clarify: Basi binary or decimal ni siya? Please double-check.---3) Octal: 352743 = 0115 = 1012 = 0107 = 1114 = 100Answer: 35274 (octal) = 011101010111100 (binary)